An Accurate Photovoltaic Source Emulator with High-Bandwidth Using a Backstepping Controller

This paper presents the design and development of a photovoltaic (PV) source emulator able to behave similarly as an actual PV module irrespective of environmental conditions change, it consists basically of a switch mode power supply (SMPS) controlled by a backstepping technique with a control strategy of referencing. The backstepping strategy is used to guaranty more accuracy and stability of the system and ensure a high bandwidth in order to track faithfully the Current-Voltage (I-V) characteristic of a desired PV module. Simulation results are given and discussed so as to validate the functioning of the proposed PV emulator as well as evaluate the performances of the suggested control technique in terms of accuracy, speed, and robustness against load and weather parameters variation.